RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4350 locations in the last 30 days (4513 reports) · Last sighting yesterday

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What am I looking at?

Each circle is a Chicago neighborhood. The number is its report count — click one to zoom in and see individual sightings there.

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Colors are relative to what’s currently on screen, so they adjust as you switch time ranges.

Zoomed into a neighborhood or zip? Same colors group nearby reports, and a bright dot means that exact spot’s been reported more than once.

Why Chicago keeps score on its rats

Chicago has topped national rankings of the rattiest U.S. cities for over a decade running — a reputation the city itself takes seriously enough to run one of the country’s most active 311 rodent-complaint programs. Every baiting request, burrow report, and complaint filed with the city becomes a public record. RatCity turns that record, plus reports from people who live here, into a map you can actually use: is this block bad? Is it getting worse? Which neighborhood is winning (or losing) the fight this month?

What’s actually on the map

Most of the data is Chicago’s own — every “Rodent Baiting/Rat Complaint” filed through 311, pulled in automatically once a day so the map never goes stale. Layered on top are sightings reported directly by visitors, matched to the same neighborhood and zip-code boundaries the city uses, so a resident’s report and an official 311 complaint carry equal weight on the map.

Reading the map

Circles are sized and colored by how many reports a neighborhood has racked up — blue is quiet, red means trouble. The Day / Week / 30 Days / Year toggle up top changes the window, so you can see whether a neighborhood’s rat problem is a one-week blip or a year-long trend. Whoever’s in the lead gets crowned the neighborhood Rat King in the sidebar, a title that changes hands as new reports come in.

Noticed a rat that isn’t on the map yet? Use “Report a sighting” above — it takes under a minute and goes live as soon as it’s reviewed. Curious about where the data actually comes from or how reports are moderated? See the About page for the full breakdown.

Want more? The blog has weekly trend recaps and guides on Chicago’s rat problem and how to keep it out of your home.

Browse every sighting

57,594 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/2/20258519 S BUFFALO AVESouth Chicago10Completed5 daysInternetCity 311
10/5/20258410 S BURLEY AVESouth Chicago10Completed2 daysPhone CallCity 311
9/29/20258318 S OGLESBY AVESouth Chicago7Completed8 daysPhone CallCity 311
10/4/20258756 S EXCHANGE AVESouth Chicago10Completed3 daysMobile DeviceCity 311
8/11/20257948 S CLYDE AVESouth Chicago8Completed11 daysAlderman's OfficeCity 311
8/11/20257950 S CLYDE AVESouth Chicago8Completed11 daysAlderman's OfficeCity 311
8/13/20257943 S CLYDE AVESouth Chicago8Completed9 daysPhone CallCity 311
12/12/20258501 S MARQUETTESouth Chicago7Completed3 daysSalesforce Mobile AppCity 311
7/10/20268901 S COMMERCIAL AVESouth Chicago10Completed7 daysPhone CallCity 311
7/17/20268132 S BRANDON AVESouth Chicago7Completed0 daysMobile DeviceCity 311
7/16/20268204 S EXCHANGE AVESouth Chicago7Completed1 dayInternetCity 311
7/9/20268356 S MACKINAW AVESouth Chicago10Completed8 daysPhone CallCity 311
7/8/20268330 S MANISTEE AVESouth Chicago7Completed9 daysPhone CallCity 311
7/8/20268331 S MANISTEE AVESouth Chicago7Completed9 daysPhone CallCity 311
10/21/20268132 S BENNETT AVESouth Chicago8Open—InternetCity 311
10/14/20268509 S OGLESBY AVESouth Chicago8Completed7 daysPhone CallCity 311
10/21/20268454 S MUSKEGON AVESouth Chicago7Open—Mobile DeviceCity 311
9/22/20258112 S AVALON AVEAvalon Park8Completed7 daysAlderman's OfficeCity 311
8/18/20258110 S KENWOOD AVEAvalon Park8Completed8 daysInternetCity 311
8/31/20258139 S KIMBARK AVEAvalon Park8Completed9 daysInternetCity 311
4/14/20268518 S DANTE AVEAvalon Park8Completed1 dayAlderman's OfficeCity 311
8/26/20258511 S DANTE AVEAvalon Park8Completed7 daysPhone CallCity 311
1/2/20268357 S CONSTANCE AVEAvalon Park8Completed3 daysInternetCity 311
12/13/20251614 E 85TH PLAvalon Park8Completed2 daysMobile DeviceCity 311
12/20/20258357 S CONSTANCE AVEAvalon Park8Completed2 daysInternetCity 311
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